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(No Model.)

F. B. GIBSLER. ATTACHMENT FOR MALTING DRUMS, BEER VATSrAND SIMILAR STRUCTURES.

No. 461%?. Patented Oct. 13, 1891.

zo thereto.

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UNITED. STATES PATENT QFEICE.

FRANKLIN E. GIESLER, or MILWAUKEE, WISCONSIN, AssIGN'oR To THE eALLAND-IIENNINcT PNEUMATIc MALTING DRUM MANUFACTURING COMPANY, OF SAME PLACE.

ATTACHMENT FOR MALTlNG-DRUMS, BEER-VATS, AND SIMILAR STRUCTURES.

SPECIFICATION forming part of Letters Patent No. 461,187, dated October 13,1891.

Application led October 24, 1890. Serial No. 369.166. (No model.)

and in the State of tVisconsin, have invented certain new and useful Improvements in Attach ments to Malting-Drums, Beer-Vats, and Similar Structures; and l do hereby declare that the following is a full, clear, and exact Io description thereof.

My invention relates to the covers for the man-holes of maltlng-drums, beer-vats, and similar structures; and the invention consists in certain peculiar and novel features of conr5 struction and arrangement, as hereinafter described and claimed.

In the accompanyingr drawings, Figure l is a plan view of aportion of the top of a malting-drum with my improvements applied Fig. 2 is a transverse section of the same on the line 2 2 of Fig. 1. Fig. 3 is a detached sectional View on the line 3 3 of Fig. 5. Fig. 4 is a cross-section on the line 4. a of Fig. 5. Fig. is an underside view of 2 5 the drum-top, showing the construction of one of the fasteners.

The object of my invention isto provide means whereby the covers of malting-drums, beer-vains, and similar structures can be 3o quickly and irmly heldin closed position and also quickly released when such covers are to be opened. This result I attain by virtue of the construction, which T will now proceed to describe.

Inthe said drawings, A designates the top of a malting-drum or similar structure, and (t designates a man-hole formed therein.

B B designates two guides, `which have Iianges b, through which extend bolts or riv- These guides are placed parallel with each other at opposite sides of the man-hole a and adjacent to two of the margins of said man-hole, substantially as shown in Figs. 1 and 2. Each of these guides is formed with inverted-U-shaped flanges C, which extend longitudinally of the flanges b and extend toward each other at the adjacent margins of the flanges o, so .as tooverhang. the slide or cover D, the said cover being preferably formed or provided with a suitable handle d. 5o

At intervals each flange C is formed with a transverse opening c, and on its under side at opposite sides of each opening with two transverse ribs c. Each of these ribs is formed beyond its cen ter with an offset c2, for a purpose to be presently explained.

E designates levers, each of which is formed lon its inner end with a cam-shaped enlargement e, which lies on the under side of the lever. From opposite sides of the inner end of each lever extend two arms c e', each of which is formed with a circular transverse groove e2, to receive a screw or pin c3, said pins or screws extending transversely through the outer walls of the guide-flanges C.

The operation will be readily understood from the foregoing description, together with the accompanying drawings. When the cover has been moved over the man-hole, the levers E are thrown toward each other, their arms c pressing upward against the offsets c2 and their cams e pressing upon the upper side of the cover D and the cam,serving, together with the olsets c2, to hold thelevers in depressed position extending toward each other. When the man-hole is to be uncovered, the levers E are lifted andmoved away from each other, thus releasing the pressure upon the door or slide D.

.Having thus described my invention` what I claim as new therein, and desire to secure by Letters Patent, is-

1. The combination, wit-h a malting-drnm, beer-vat, or similar structure and its manhole, of oppositely-disposed guides supporting a sliding door and having curved flanges, transverse openings located in said Ranges, ribs having offsets located at opposite sides ot' said openings, and levers arranged in said openings having cam-heads and oppositelyextending arms7 the latter working beneath said ribs, substantially as set forth.

2. The combination of a drum or vat having a sliding door, levers having cam-heads andgrooved arms, guide-angeshaving transthe county of Milwaukee and State of Wisverse openings receiving said levers, `amd cousin, in the presence of tWo witnesses. screws or pins inserted laterally in said ianges and entering the grooves in sai-d lever- 5 arms, substantially as set forth. Witnesses:

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in

FRANKLIN eiEsLER.

H. G. UNDERWooD, WM. KLUG. 

